PURIFICATION METHOD OF 4-HYDROXY BENZOIC ACID LONG CHAIN ESTER

PROBLEM TO BE SOLVED: To provide a purification method capable of easily removing residues such as a catalyst or a reaction raw material from a crude composition of 4-hydroxy benzoic acid long chain ester and providing high purity 4-hydroxy benzoic acid long chain ester at high yield.SOLUTION: High...

Full description

Saved in:
Bibliographic Details
Main Authors KIDA YUSUKE, HISANO TAKAYA, TSUCHIYA MIO, KOMATSU TOSHIHIDE
Format Patent
LanguageEnglish
Japanese
Published 28.12.2016
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide a purification method capable of easily removing residues such as a catalyst or a reaction raw material from a crude composition of 4-hydroxy benzoic acid long chain ester and providing high purity 4-hydroxy benzoic acid long chain ester at high yield.SOLUTION: High purity 4-hydroxy benzoic acid long chain ester can be obtained with removing unreacting carboxylic acid and catalyst by melting a crude composition of 4-hydroxy benzoic acid long chain ester and mixing with an organic solution to deposit a crystal and suspension washing them under a temperature where the crystal is not dissolved.SELECTED DRAWING: None 【課題】４−ヒドロキシ安息香酸長鎖エステルの粗組成物から触媒や反応原料などの残存物を容易に除去することができ、高純度の４−ヒドロキシ安息香酸長鎖エステルが高収率で得られる精製方法を提供すること。【解決手段】４−ヒドロキシ安息香酸長鎖エステルの粗組成物を溶融した後、有機溶液と混合することにより結晶を析出させ、さらに結晶が溶融しない温度下で懸濁洗浄することによって、未反応のカルボン酸や触媒などを除去し、高純度の４−ヒドロキシ安息香酸長鎖エステルを得ることができる。【選択図】なし
Bibliography:Application Number: JP20150107751